The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water....? Mcqs

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The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water....?

(A) 1 gram
(B) 10 grams

(C) 1 kg
(D) 10 kg

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Pig iron is also called________...?

(A) Cast iron
(B) Steel

(C) Wrought iron
(D) Stainless steel

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What is responsible for the high resolution of the electron microscope...?

(A) High magnification
(B) Short wavelength of the electron beam

(C) Use of heavy metals strains
(D) Very thin section

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Which one of the following act as oxidizing agent...?

(A) Be
(B) Mg

(C) Na
(D) Cl

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When the moon and the sun are on opposite side of the earth, we see a _____...?

(A) New Moon
(B) Full Moon

(C) Half Moon
(D) None

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Which organ is considered as chemical factory of human body ...?

(A) Stomach
(B) Intestine

(C) Liver
(D) Kidneys

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What are the directions of a magnetic bar...?

(A) North, South, East, West
(B) Up, Down, Left, Right

(C) Positive, Negative, Neutral
(D) North, South

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Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?

(A) 0.90 gm/cm^3
(B) 8.1 gm/cm^3

(C) 9.0 gm/cm^3
(D) 13.5 gm/cm^3

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Which of the following is the most stable element...?

(A) Uranium
(B) Hydrogen

(C) Oxygen
(D) Lead

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If nucleon number of potassium is 39, number of neutrons will be _______...?

(A) 39
(B) 19

(C) 20
(D) 29

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